plat: imx8mm: switch the CKIL clock source to 32K OSC

Switch the CKIL clock source to 32K OSC. On i.MX8MM,
after SOC PoR, the default clock source for CKIL is from
divided 24MHz OSC, as 24MHz OSC will be power down when
system enters DSM mdoe. So it is better to use 32K OSC
as the default clock source after system bootup.

Signed-off-by: Bai Ping <>
(cherry picked from commit ede5b2ccebd7b5e22d38304def6d449aaa8096d3)
1 file changed